从网络读取图片

mportjava.io.BufferedInputStream;
importjava.io.IOException;
importjava.net.URL;
importjava.net.URLConnection;
importandroid.graphics.BitmapFactory;
BitmapgetImage(StringimageLink)
{
if(imageLink==null||imageLink.length()==0)
returnnull;
try{
URLurl=newURL(imageLink);
URLConnectioncon=url.openConnection();
con.connect();
BufferedInputStreambis=newBufferedInputStream(con.getInputStream());
Bitmapimage=BitmapFactory.decodeStream(bis);
bis.close();
returnimage;
}catch(IOExceptione)
{
returnnull;
}
}
注意1：BitmapFactory提供了很多方法来对Bitmap数据进行解码的